QWTCPOINTERVALUEDATA(3)

📦
version 6.3.0 · 2 versions
, in alpine 3.24

hey bestie, welcome to the QwtCPointe...ueData< T >(3) page from the Library Functions Manual 💖 this is all about QwtCPointerValueData< T >, aka the "pointer to y data" data class. it's giving template realness, no cap ✨

💖 NAME 💖

  • QwtCPointerValueData< T > — a data class containing a pointer to memory of y coordinates 🎀

🌈 SYNOPSIS 🌈

#include <qwt_point_data.h>

Inherits QwtSeriesData< QPointF >.

✨ Public Member Functions ✨

  • QwtCPointerValueData (const T *y, size_t size)
  • virtual size_t size () const override
  • virtual QPointF sample (size_t index) const override
  • const T * yData () const

💜 Public Member Functions inherited from QwtSeriesData< QPointF > 💜

QwtSeriesData ()
    Constructor.
virtual ~QwtSeriesData ()
    Destructor.
QPointF firstSample () const
QPointF lastSample () const
virtual QRectF boundingRect () const
virtual void setRectOfInterest (const QRectF &rect)

🧚 Additional Inherited Members 🧚

Protected Attributes inherited from QwtSeriesData< QPointF >

  • QRectF cachedBoundingRect — can be used to cache a calculated bounding rectangle 🦋

🦋 Detailed Description 🦋

template<typename T>
class QwtCPointerValueData< T >

Data class containing a pointer to memory of y coordinates. 💅

The memory contains the y coordinates, while the index is interpreted as x coordinate. lowkey iconic, honestly 🎀

Definition at line 89 of file qwt_point_data.h.

🎀 Constructor & Destructor Documentation 🎀

template<typename T> QwtCPointerValueData< T >::QwtCPointerValueData (const T * y, size_t size)

Constructor ✨

Parameters

  • y — Array of y values
  • size — Size of the x and y arrays
⚠️ Warning: The programmer must assure that the memory blocks referenced by the pointers remain valid during the lifetime of the QwtCPointerValueData object. this is the "keep your pointers alive" rule, bestie, no cap 😭

See also

QwtPlotCurve::setData(), QwtPlotCurve::setRawSamples()

Definition at line 380 of file qwt_point_data.h.

✨ Member Function Documentation ✨

template<typename T> QPointF QwtCPointerValueData< T >::sample (size_t index) const [override], [virtual]

Return the sample at position i 💫

Parameters

  • index — Index

Returns

Sample at position i

Implements QwtSeriesData< QPointF >.

Definition at line 400 of file qwt_point_data.h.

template<typename T> size_t QwtCPointerValueData< T >::size () const [override], [virtual]

Returns

Size of the data set

Implements QwtSeriesData< QPointF >.

Definition at line 388 of file qwt_point_data.h.

template<typename T> const T * QwtCPointerValueData< T >::yData () const

Returns

Array of the y-values

Definition at line 407 of file qwt_point_data.h.

🌸 Author 🌸

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you made it to the end, bestie 🎀 this page is from the Qwt User's Guide, auto-generated by Doxygen from the source code, and it's the QwtCPointe...ueData< T >(3) page — no date printed on it, but it still ate 💅✨

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